Java多线程和输入输出流

1、1班级：13科技2班 学号：201324131225：许耿宁Java多线程和输入输出流一、实验目的：1.熟悉利用 Thread 类建立多线程方法。2.熟悉利用 Thread 接口建立多线程方法。3.熟悉 Java 的文件读写机制，练习输入输出流的使用。二、实验容：1.阅读下列程序，分析并上机检验其功能。 public class DelayRunnableimplements Runnable private static int count=0;private int no;private int delay;public DelayRunnable()count+; no=count;pu

2、blic void run()tryfor (int i=0;i10;i+) delay=(int)(Math.random()*5000);Thread.sleep(delay);System.out.println(Thread +no+ with a delay +delay); catch(InterruptedException e)class MyRunnablepublic static void main(String args) DelayRunnable r1 = new DelayRunnable();DelayRunnable r2 = new DelayRunnabl

3、e();Thread thread1=new Thread(r1);Thread thread2=new Thread(r2);thread1.start();2thread2.start();tryThread.sleep(1000);catch(InterruptedException e)System.out.println(Thread wrong);2. 将上列程序利用 Runnable 接口改写，并上机检验。3. 创建简单的程序 ThreeThread.java ，该程序将创建三个线程， 每个线程应 当显示它所运行的时间(可以考虑使用 Date 类或 Calendar 类)。4.

4、键盘输入 10 个整数，从小到大进行排序。5. 接收键盘输入的字符串，用 FileInputStream 类将字符串写入文件，用FileOutputStream 类读出文件容显示在屏幕上。6. 将一个文本文件的容按行读出，每读出一行就顺序加上行号，并写入到另一个文件中。三、实验要求：1. 通过实验掌握 Thread 、 Runnable 使用方法；2. 程序必须能够实现多线程；3. 程序必须能够完成题目要求；4. 通过实验掌握文件输入输出流的使用方法；5. 程序必须能够从键盘接收字符串并保存在文件中；6. 程序必须能够读出文件容显示在屏幕上；7. 写出实验报告。四、实验代码及截图： 第一题：

5、在编译器上运行程序得到截图所示结果：3terminMyRunnable Java ApplieationJ D:Js;Thread1 with a delayThread2wtha delayThread2with白delayThread1witha delayThread2 witha delayThread1witha delayThre白d 2witha del白yThread1withdLdelayThread2witha delayThread1witha delayThread2 with a delayThread2with a delayThread2 with a delyT

6、hread1witha delayThread1witha delayThread2witha delayThread1witha delayThread2withdelayThread1with a delayThread1witha delay32873870353148724491416461132684200220811015851681274312303400236023984810298第二题：实验代码public class DelayThread exte nds Threadprivate static int coun t=0;private int no;private

7、int delay;public DelayThread()coun t+;no=co unt;public void run()tryfor (i nt i=0;i10;i+)delay=(i nt)(Math.ra ndom()*5000);sleep(delay);System.out.pri ntl n(Thread +no+ with a delay+delay); catch(I nterruptedExcepti on e)4class MyThreadpublic static void main( Stri ng args) DelayThread thread 仁 new

8、DelayThread();DelayThread thread2=new DelayThread(); thread1.start();thread2.start();tryThread.sleep(1000);catch(l nterruptedExcepti on e) System.out.pri ntl n(Thread wron g);实验结果截图： MyTliread Java Applkaticn D:JavajThread 1 with adelay720Thread 2评ith a delay2041Thread 1 with adelay2560Thread 2 with

9、 adelay 4080Thread 1 with adelay3169Thread 1 with adelay490Thread 2 with adelay960Thread 1 with adelay 960Thread 2 with adelay1179Thread 1 with adelay 410Thread 2 with adelay80 CThread 1 with adelay3415Thread 2叩ith a delay4053Thread 1 with adely3159Thread 2 with adelay2476Thread 1 with日delay1361Thre

10、ad 2 with adelay3926Thread 1 with adelay2845Thread 2 with adelay1052Thread 2 with adelay 422第三题：实验代码：public class MultiThread static Lock mylock;public static void main( Stri ng args) Runnin gObject1 r1 = new Runnin gObject1();Thread t1 = new Thread(r1, t1);Thread t2 = new Thread(r1, t2);Thread t3 =

11、 new Thread(r1, t3);t1.start();t3.start();5t2.start();static class RunningObjectl implements Runnable public void run() syn chro nized(this)Stri ng n ame=Thread.curre ntThread().getName();System.out.pri ntln(n ame+开始日寸间:+Cale ndar.getl nsta nce().getTimel nMillis();for (int i = 0; i MultrThread JJav

12、a Applicdtion DiJavdjreL9.0_9rbintl幵始时I环1466407635147=结束时间4466407635200t2ff始时间：L46640763520014664076352211466407635222结莉寸间：1466407635227第四题：实验代码：public class Test1 public static void main(String args) throws IOExceptionBufferedReaderbr=newBufferedReader( newIn putStreamReader(System.i n);Stri ng str

13、;int array=new in t10;246for(int i=0;i10;i+)int a=i+1;System.out.println(请输入第+a+整数:);str=br.readL in e();arrayi=l nteger.parsel nt(str);for(i nt j=0;j9;j+)for(int k=j+1;k10;k+)if(arraykarrayj)int temp=arrayk;arrayk=arrayj; arrayj=temp;for(i nt m=0;m10;m+)if(m!=9) System.out.pri nt(arraym+,);elseSyst

14、em.out.pri nt(arraym);实验结果截图：termi n dte-destl刖Appiic肿on U;y| rel,b inj vaJ.Vi口I请谕入第l整情谕入第2整数：请输入第3整数：请输入第4整数：34请谕入第5整数：请输入第6整数：请输入第7龜数：66请输入第g整数：99请输入第9整数：744请输入策10整数：201,13,20,22,24,34,44,53,6r99第五题：实验代码： public class Test2 public static void main( Stri ng args) try System.out.println(”请输入容:)；File

15、 myfile = new File(save.txt);byte outCh = new byte100;int bytes = System.i n.read(outCh, 0, 100);/将 文件读入二进制数组中FileOutputStream Fout = new FileOutputStream(myfile);Fout.write(outCh,0,bytes);/将数组中的字节输入到这个流中 byte inCh= new bytebytes;File In putStream Fin = new File In putStream(myfile);Fin. read(i nCh)

16、;System.out.pri ntln(读取文件容：);System.out.pri ntln(n ew Strin g(i nCh); catch (IOExcepti on e) System.out.pri ntl n( e.toStri ng();实验结果截图：utermi门曰tedn T皿2 (1 Java Application D:Jdvajre 1.3.1 binjavaw.exe 20166冃20日 请输入内容：好好学习，天天向上快取文件内容；好好学习，天天问上文件(F)務任格式 grt(V)亀旬(H好好学习，天天向上第六题：实验代码：public class Test3

17、public static void main(String args) throws lOException Stri ng str=n ull;FileReader file=new FileReader(F:/1.txt);8FileWriter b=new FileWriter(F:/2.txt); BufferedWriter c=newBufferedWriter(b);Lin eNumberReader in=new Lin eNumberReader(file); while(str=in.readLi ne()!=null)System.out.pri ntl n(i n.getLi neNumber()+:+str); c.write(st